oil pressure gauge

hi everyone, I'm trying to install the pressure sending unit for my oil pressure gauge, but i cant get the stock oil pressure switch out of the engine, is there any special tools of tricks i need, any suggestions would be greatly appreceated.. thanks in advance.

P.S. 2002 GP GT 34,000 miles 3.8l

That switch requires a special socket (available at any decent auto parts store) for removal/installation.

thanks i'll go looking for that item tommorow